Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

Habitat.—Central Pacific, Station 274, surface.

2. Carposphæra cubaxonia, n. sp.

Cortical shell smooth, three times as broad as the medullary shell, with regular hexagonal pores, four times as broad as the bars. Eight to ten pores on the quadrant. Medullary shell with regular circular pores, twice as broad as the bars. Both shells connected by six radial beams, which are three-sided prismatical, opposite in pairs in the three dimensive axes.

Dimensions.—Diameter of the outer shell 0.15, inner 0.05; outer pores 0.01, inner 0.005.

Habitat.—South Pacific, Station 291, surface.

3. Carposphæra infundibulum, Haeckel.

Haliomma infundibuliforme, Stöhr, 1880, Palæontogr. Bd. xxvi. p. 87, Taf. i. fig. 6.

Cortical shell very thick-walled, two and a half times as broad as the medullary shell, with rough surface and regular hexagonal, funnel-shaped pores, of about the same breadth as the bars. Five to six on the quadrant.

Dimensions.—Diameter of the outer shell 0.1, inner 0.04, outer pores and bars 0.01.

Habitat.—North Atlantic, Station 354; fossil in Tertiary rocks (Barbados and Sicily).